JP2012051077A - Cutting apparatus and cutting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cut a cover sheet along the linear end edge of a substrate, and to avoid damage to the end edge of the substrate.SOLUTION: A cutting apparatus includes: a disk blade for trimming the cover sheet along the linear end edge of the substrate; a driving means for rotating the disk blade; and a moving means for moving either of the driving means and the substrate so as to relatively move the disk blade along the linear end edge. The cutting apparatus further includes: a pivoting means for pivoting the disk blade about the axis perpendicular to the surface of the substrate and keeping the pivoted angle of the disk blade in order to adjust an angle formed of a plane which includes the linear end edge and is perpendicular to the surface of the substrate, and a plane formed of the disk blade; and a control means for controlling the moving means and the pivoting means.

Description

  The present invention relates to a cutting technique for a covering sheet that covers a substrate.

  As a sheet-like material cutting device, one having the following configuration has been proposed. For example, Patent Document 1 discloses an apparatus that cuts roll paper by moving a disc blade along a fixed blade. Patent Document 2 discloses an apparatus for trimming a protective tape of a semiconductor wafer along the periphery of the semiconductor wafer. Furthermore, Patent Document 3 discloses an apparatus for cutting a sheet-like member by moving a disc blade along a guide member.

Japanese Patent Application Laid-Open No. 08-229883 JP 2004-025402 A JP 2007-054926 A

  A substrate such as a glass substrate or a semiconductor wafer may be coated with a covering sheet to protect the surface. For example, in a solar cell module substrate, in addition to protecting the light receiving surface, a plurality of members constituting the solar cell module substrate are composed of a plurality of layers, and a covering sheet is also used to collectively configure these members. ing. Since the portion of the covering sheet that protrudes from the periphery of the substrate is unnecessary, it must be cut. In particular, for a substrate having four straight edges such as a rectangular substrate, it is necessary to cut the covering sheet along the straight edges and to prevent damage such as chipping on the straight edges. .

  It is an object of the present invention to cut a covering sheet along a straight edge of a substrate and prevent damage to the edge of the substrate.

  According to the present invention, a disk blade for trimming a covering sheet covering a substrate along a linear edge of the substrate, and the disk blade is supported perpendicularly to the surface direction of the substrate and rotated. Driving means; and moving means for moving either the driving means or the substrate so that the disc blade moves relative to the substrate along the linear edge. A cutting device for adjusting the angle between a plane perpendicular to the substrate surface including the straight edge and a plane formed by the disc blade; an axis perpendicular to the substrate surface; There is provided a cutting apparatus further comprising a rotating means for rotating around and maintaining the rotation angle, and a control means for controlling the moving means and the rotating means.

  According to the present invention, it is possible to cut the covering sheet along the straight edge of the substrate and not damage the edge of the substrate.

The top view of the cutting device A which concerns on one Embodiment of this invention. The front view of the cutting device A. FIG. The perspective view of the head unit H. FIG. FIG. 3 is an exploded perspective view of the main configuration of the cutting unit 10. Sectional drawing of the drive unit 13. FIG. (A) is an enlarged view of the blade edge part 14a of the disk blade 14, (B) is explanatory drawing of the cutting | disconnection aspect of the coating sheet 2 by the blade edge part 14a. (A) is an enlarged view of blade edge part 14a 'of the other example of disc blade 14, (B) is an explanatory view of a cutting mode of covering sheet 2 by blade edge part 14a'. The block diagram of the control apparatus 50. FIG. (A) And (B) is explanatory drawing of teaching. (A) And (B) is explanatory drawing of trimming operation | movement. (A) And (B) is explanatory drawing of trimming operation | movement. (A) And (B) is explanatory drawing of trimming operation | movement. Explanatory drawing of trimming operation | movement. (A) And (B) is explanatory drawing of the other example of trimming operation | movement. (A) And (B) is explanatory drawing of the other example of trimming operation | movement. (A) And (B) is explanatory drawing of the other example of trimming operation | movement.

  FIG. 1 is a plan view of a cutting device A according to an embodiment of the present invention, and FIG. 2 is a front view of the cutting device A. In the drawing, arrows X and Y indicate two directions that are horizontal and orthogonal to each other, and an arrow Z indicates a vertical direction. The cutting device A includes a head unit H, a moving device 30 that moves the head unit H on the XY plane, and a holding unit 40 that holds the substrate 1. The head unit H includes a cutting unit 10 and a rotation / lifting unit 20 that rotates the cutting unit 10 to move up and down. Hereinafter, each of these configurations will be described.

<Holding unit 40>
The upper surface of the holding unit 40 forms a horizontal plane on which the substrate 1 is placed. A fixing mechanism for releasably fixing the substrate 1 may be provided on the upper surface of the holding unit 40. Examples of the fixing mechanism include an adsorption mechanism that adsorbs the substrate 1. By the fixing mechanism, a covering sheet (not shown in FIGS. 1 and 2) covering the substrate 1 can be accurately cut.

  The substrate 1 is, for example, a glass plate, and in the case of the present embodiment, a rectangular substrate is assumed, and the four sides thereof constitute the straight edge 1a. The cutting apparatus A according to the present embodiment trims the covering sheet along such a straight edge 1a. However, in addition to the substrate whose contour is composed of only the straight edge 1a as in the substrate 1, the straight edge is partially included in the contour. The cutting apparatus A can also be applied to various shapes of substrates including edges.

  The substrate 1 is transported and transferred onto the holding unit 40 by a transport mechanism (not shown). At that time, each side is positioned so as to be parallel to the X direction or the Y direction, and is placed on the upper surface of the holding unit 40 in a horizontal posture.

<Moving device 30>
The moving device 30 includes a head unit moving unit (rail portion 34, drive slider 35) for moving the head unit H, and a moving unit (rail portion 31, drive slider 32, driven slider 33) for moving the head unit moving unit. It is divided roughly. Details will be described below.

  The moving device 30 includes a pair of rail portions 31 that are separated from each other in the X direction and extend in the Y direction. The rail portion 31 has a guide groove 31a extending in the Y direction on the upper surface thereof. One rail portion 31 is provided with two drive sliders 32 that are guided by the guide groove 31a and can move on the rail portion 31, and the other rail portion 31 is guided by the guide groove 31a to be rail portion 31. Two driven sliders 33 are provided that are movable upward. The drive slider 32 and the driven slider 33 form a pair, and in this embodiment, two sets of the drive slider 32 and the driven slider 33 are provided.

  Each drive slider 32 has an independent drive source and independently runs on the rail portion 31. As a mechanism for causing the drive slider 32 to self-run, for example, a ball screw mechanism of a ball screw provided on the rail portion 31 and a ball nut screwed to the ball screw can be employed. Each drive slider 32 may be provided with a ball nut and a rotary drive means (for example, a hollow motor) that rotatably holds the ball nut and rotates the ball nut. Each driven slider 33 does not have a self-propelled mechanism.

  A rail portion 34 is provided between the driving slider 32 and the driven slider 33 of each set. The rail portion 34 extends in the X direction, and is translated in the Y direction by the movement of the drive slider 32 in the Y direction. The rail portion 34 has a guide groove 34a extending in the X direction on the upper surface thereof. Each rail portion 34 is provided with a drive slider 35 that is guided by the guide groove 34 a and can move on the rail portion 34. The drive slider 35 self-travels on the rail portion 34 by the same mechanism as the drive slider 32 described above.

  A rotation / lifting unit 20 is fixed to each drive slider 35. The rotation / lifting unit 20 and the cutting unit 10 can be moved in the X direction by the movement of the drive slider 35.

  Thus, in the present embodiment, the head unit H can be moved on the XY plane. In this embodiment, the cutting unit 10 is moved with respect to the substrate 1. However, the cutting unit 10 may be moved on the substrate 1 side, and the disc blade 14 is relative to the substrate 1 along the straight edge 1 a. Any of them may be moved as long as they can move to.

  The moving device 30 includes sensor means (not shown) for detecting the position of the cutting unit 10 in the XY direction. Examples of such sensors include sensor means for detecting the positions of the drive sliders 32 and 35. More specifically, when the drive source of the drive sliders 32 and 35 is a motor, the rotation amount of the motor is detected. A sensor (for example, an encoder) is mentioned.

<Rotation / lifting unit 20>
The rotation / lifting unit 20 will be described with reference to FIGS. 2 and 3. FIG. 3 is a perspective view of the cutting unit 10 and the rotation / lifting unit 20. The rotation / elevating unit 20 includes a shaft body 21 and a mechanism (not shown) for rotating the shaft body 21 around its axis (broken line L1 in FIG. 2) and raising and lowering the shaft body 21. The shaft body 21 has its axis oriented in the Z direction.

  In the case of this embodiment, the cutting unit 10 is connected to the shaft body 21, and by rotating the shaft body 21, the cutting unit 10 is rotated about the rotation center axis (the broken line L1 in FIG. 2) in the Z direction. The rotation angle can be maintained, and the cutting unit 10 can be moved up and down in the Z direction by moving the shaft body 21 up and down.

  By rotating the cutting unit 10 and maintaining the rotation angle, a surface perpendicular to the substrate surface of the substrate 1 including the straight edge 1a to be trimmed (in this embodiment, a vertical surface in the Z direction) The angle (crossing angle) with the plane formed by the disc blade 14 (in the present embodiment, a vertical plane in the Z direction) can be adjusted. By adjusting and maintaining this angle, the disk blade 14 can be brought into contact with the edge of the substrate 1 at a suitable angle, and the edge of the substrate 1 is damaged when the covering sheet is cut. Can be prevented.

  Further, the cutting unit 10 is moved up and down to form a surface perpendicular to the substrate surface of the substrate 1 including the straight edge 1a to be trimmed (in the present embodiment, a vertical surface in the Z direction) and the disc blade 14. The cutting blade position (height position) of the blade tip 14b formed on the peripheral surface of the disk 14 to be described later with respect to the flat surface (in the case of the present embodiment, a vertical surface in the Z direction) can be adjusted.

  Since the direction of the disc blade 14 and the cutting blade position can be adjusted in this way, the covering sheet is cut along the straight edge 1a at the optimum inclination and cutting blade position according to the type of the covering sheet. Can do.

  A known mechanism can be adopted as a mechanism for rotating and raising / lowering the shaft body 21. For example, the mechanism for rotating the shaft body 21 may include a combination of a drive source such as a motor and a mechanism such as a gear mechanism or a belt mechanism. As a mechanism for maintaining the rotation angle of the shaft body 21, for example, when the drive source is a servo motor, the electromagnetic lock function of the servo motor can be used, or the rotation of the shaft body 21 can be released. A lock mechanism that restricts to the above may be provided separately. Moreover, as a mechanism which raises / lowers the shaft body 21, the combination of mechanisms, such as drive sources, such as a motor, and a rack-pinion mechanism, can be mentioned.

  The rotation / elevation unit 20 includes sensor means (not shown) for detecting the rotation angle (rotation position) of the cutting unit 10 and the position in the Z direction. An example of such a sensor is a sensor (for example, an encoder) that detects the amount of rotation of the motor when each of the drive sources that rotate and raise and lower the shaft body 21 is a motor.

<Cutting unit 10>
The cutting unit 10 will be described with reference to FIGS. 3 to 5. FIG. 4 is an exploded perspective view of the main configuration of the cutting unit 10, and FIG. 5 is a cross-sectional view of the drive unit 13. The cutting unit 10 includes a plate-shaped main support portion 11, a connecting portion 12 that connects the shaft body 21 of the rotation / lifting unit 20 and the main support portion 11, and a disc blade 14 in the surface direction of the substrate 1 Drive unit 13 that supports and rotates perpendicularly to the horizontal direction in the case of the embodiment.

  The drive unit 13 includes a vertical portion and a horizontal portion, and includes a support portion (slider) 131 having a substantially L-shaped cross section. A drive unit 132 is attached to the back side of the vertical part of the support part 131 (the side opposite to the disk blade 14 side). The drive unit 132 includes a motor 132a as a drive source and a speed reducer 132b that decelerates the output of the motor 132a. The reduction shaft 132b is connected to the rear end portion 133b of the rotary shaft 133 of the disc blade 14, and the rotary shaft 133 rotates about its axis by the rotation of the motor 132a.

  The rotary shaft 133 has a mounting portion 133a to which the disc blade 14 is attached at the tip thereof, and a bowl-shaped disc blade contact portion 133c is formed in the vicinity of the mounting portion 133a. A disc blade 14 with a key groove that serves as a detent, a pressing member 135, and a stop member 134 are sequentially attached to the attachment portion 133a, and the stop member 134 is engaged with the tip of the attachment portion 133a. An elastic member 136 is loaded between the stop member 134 and the pressing member 135. In the case of this embodiment, the elastic member 136 is a coil spring. The pressing member 135 is biased toward the disc blade 14 by the biasing of the elastic member 136, and the disc blade 14 is sandwiched between the disc blade abutting portion 133c and the pressing member 135. The rotational runout of the plate blade 14 is suppressed.

  The rotating shaft body 133 extends in the horizontal direction. When the disc blade 14 is attached to the rotating shaft body 133, the plane formed by the disc blade 14 becomes a plane perpendicular to the horizontal plane. The rotation center axis (line L1: vertical direction in FIG. 2) of the rotation / lifting unit 20 is included on a plane parallel to the plane including the disc blade 14 (vertical plane in this embodiment). In addition, the connection position of the cutting unit 10 with respect to the rotation / lifting unit 20 is adjusted. This adjustment can be made by adjusting at least one of the shape of the connecting portion 12 and the connecting position of the connecting portion 12 and the main support portion 11. By adjusting in this way, the disc blade 14 can be positioned immediately below the rotation center axis of the rotation / lifting unit 20, and therefore the cutting unit 10 is rotated using the rotation / lifting unit 20. At this time, there is an advantage that the inclination of the plane formed by the disk blade 14 with respect to the straight edge 1a of the substrate 1 can be easily adjusted.

  The rotating shaft body 133 is pivotally supported by a ball bearing 138a. The ball bearing 138a is fitted into an inner peripheral wall on the rear end side of the cylindrical support member 138, and is prevented from coming off by a bolted fixing member 138d. A fixing ring 133d is screwed to the rear end side of the rotating shaft 133, and a fixing cylinder 133e is disposed between the fixing ring 133d and the ball bearing 138a. The position of the fixing ring 133d in the axial direction of the rotating shaft 133 is fixed by screwing the fixing ring 133d to the rotating shaft 133 and screwing the fixing ring 133d toward the distal end side. . As a result, when the elastic member 136 is urged, the rotary shaft 133 is pulled toward the distal end, the fixing ring 133d is brought into contact with the fixing cylinder 133e, and the fixing cylinder 133e is in contact with the ball bearing. 138a is contacted. As a result, the relative position of the rotary shaft 133 in the axial direction of the support member 138 is positioned.

  A seal portion 138c is formed inside the small diameter portion 138s on the distal end side of the small diameter portion 138s formed in the support member 138, and is formed continuously from the jaw portion 133c of the rotating shaft body 133 to the rear end portion side. The inner peripheral surface of the seal portion 138c is in close contact with the outer peripheral surface of the one-diameter portion 133f. The sealing portion 138c prevents cutting powder or the like of the covering sheet from entering the ball bearing 138a. Further, the support member 138 is formed with an air passage 138b that communicates with a gap formed between the disk blade contact portion 133c and the support member 138. Compressed air is supplied to the air passage 138b from an air supply unit (not shown), and this compressed air is supplied to a space (gap) surrounded by the rotating shaft 133, the support member 138, and the seal member 138c. Thereby, it is possible to further prevent the pressure inside the gap from being increased and an air flow from the gap to the outside (atmosphere side) to be generated, and the cutting powder or the like of the covering sheet to enter the ball bearing 138a.

  The cylindrical body 137 is disposed close to the surface (rear surface) of the disc blade 14 on the rear end side with the disc blade 14 as a boundary, and surrounds the outer peripheral surface of the disc blade contact portion 133c of the rotary shaft 133. Is provided. The cylindrical body 137 is mounted on the small diameter portion of the outer peripheral surface of the distal end portion of the support member 138 so as to freely rotate. Then, the axial movement of the rotary shaft 133 of the cylindrical body 137 is defined by the surface on the rear end side of the disc blade 14 and the step portion of the small diameter portion formed on the outer peripheral surface of the front end portion of the support member 138. is doing. The cut portion of the covering sheet cut by the disc blade 14 may be in the form of a belt and entangled around the rotating shaft 133. In the case of the present embodiment, the cylindrical body 137 is provided so as to be freely rotatable at the back surface portion of the disc blade 14, so that when the excised part contacts the cylindrical body 137 (when it rides), the cylindrical body 137 is Since it is idle, it can be prevented that the cut portion is entangled with the cylindrical body 137.

  Next, the advance / retreat mechanism of the drive unit 13 will be described with reference to FIG. A pair of slide members 131 a are fixed to the upper surface of the horizontal portion of the support portion 131. A pair of rail members 111 for guiding the slide member 131 a are fixed to the lower surface of the main support portion 11. The rail member 111 and the slide member 131a extend in the direction of the rotation center line of the disc blade 14 (the axial direction of the rotary shaft 133), and the drive unit 13 is supported by the main support portion 11 via the support portion 131. At the same time, it is guided by the rail member 111 so as to advance and retreat in the direction of the rotation center line of the disc blade 14.

  The main support portion 11 is provided with stopper portions 112a and 112b. The stopper portion 112a comes into contact with the stopper portion 131b provided in the support portion 131, and the stopper portion 112b comes into contact with the back surface of the support portion 131. The movement range of the drive unit 13, that is, the disk blade 14 is regulated.

  On the lower surface of the main support portion 11, a biasing portion 113 that constantly biases the drive unit 13 in a direction close to the substrate 1 is provided. The urging portion 113 includes a transmission member 113a, a support shaft 113b, a support portion 113c, an elastic member 113d, and a receiving member 113e. The support shaft 113b extends in parallel with the rail member 111, and both ends thereof are supported by the support portion 113c. The transmission member 113a is an L-shaped member having a hole through which the support shaft 113b passes, and is movable by being guided by the support shaft 113b. And the support part 131 of the drive unit 13 is connected to the lower part of the transmission member 113a.

  A support shaft 113b passes through the receiving member 113e, and an elastic member 113d is interposed between the transmission member 113a and the receiving member 113e so as to pass through the support shaft 113b. In the present embodiment, the elastic member 113d is a coil spring, and is a compression coil spring that exerts an urging force in a direction in which the transmission member 113a and the receiving member 113e are separated from each other. The urging force of the elastic member 113d is transmitted to the support portion 131 through the transmission member 113a.

  Due to the urging of the elastic member 113d, the drive unit 13 (disk blade 14) connected to the transmission member 113a is always urged in the direction approaching the substrate 1. For this reason, at the time of cutting | disconnection of a coating sheet, the disc blade 14 can be stably contact | abutted to the linear edge 1a of the board | substrate 1, and the cutting | disconnection of a coating sheet can be made smooth. Further, even if there is a deviation between a predetermined cutting position and a cutting position of the substrate that is actually positioned, if the deviation is within the range of the urging stroke of the elastic member 113d, the deviation is absorbed and the covering sheet Can be cut off. Furthermore, when the cutting of the covering sheet is started in the middle of the straight edge 1a of the substrate 1, even if the disk blade 14 comes into contact with the straight edge 1a, it is opposite to the direction in which the disk blade 14 approaches. When the elastic member 113d is bent in the direction of, the impact when the disk blade 14 abuts can be absorbed.

<Disk blade 14>
The configuration of the blade edge portion 14a (the broken-line circle portion in FIG. 5) of the disc blade 14 will be described with reference to FIG. FIG. 6A is an enlarged view of the cutting edge portion 14a of the disc blade 14, and FIG. 6B is an explanatory view of a cutting mode of the covering sheet 2 by the cutting edge portion 14a. The disc blade 14 includes surfaces 141 and 142 that are parallel to each other and orthogonal to the rotation center line, and the surface 141 is a side surface that is located on the side of the straight edge 1a to be trimmed when the covering sheet 2 is cut. The blade tip 14b is located on the surface 142. The side surface on the surface 141 side is composed of this surface 141 and surfaces 143 and 144 constituting the cutting edge portion 14a. The surface 144 is formed as a surface that intersects the surface 142 at an acute angle at the blade tip 14b, and the surface 143 intersects the surface 142 at a more acute angle than the surface 144 (the rotation of the disk blade 14 further). (Inclined toward the center side). That is, with respect to the blade tip 14b of the surface 142, the surface 144 and the surface 143 are continuously formed as descending inclined surfaces having different gradients.

  When cutting the cover sheet 2, if the blade tip 14b is brought into contact with the straight edge 1a, the blade tip 14b may damage the straight edge 1a and the blade tip 14b is likely to be worn. Therefore, in the present embodiment, the covering sheet 2 is cut by bringing the intersection point P formed by the surface 143 and the surface 144 into contact with the straight edge 1a. Thereby, it can further prevent that the edge of the board | substrate 1 is damaged.

  FIG. 6B shows a state in the middle of cutting the covering sheet 2 that protrudes from the straight edge 1a. The covering sheet 2 protruding from the straight edge 1a is cut by moving the disk blade 14 along the straight edge 1a (moving in the direction of the arrow) while bringing the intersection P into contact with the straight edge 1a. Is done. By cutting, the covering sheet 2 is divided into a remaining portion 2a remaining on the substrate 1 side and a cut portion 2b. The remaining portion 2a is generated by the gap between the blade tip 14b and the straight edge 1a, and is preferably as small as possible (close to the edge of the substrate).

  Next, FIG. 7A is an enlarged view of a cutting edge portion 14a ′ of another example of the disc blade 14, and FIG. 7B is an explanatory view of a cutting mode of the covering sheet 2 by the cutting edge portion 14a ′. In the example of the figure, the side surface located on the side of the straight edge 1a to be trimmed at the time of cutting is formed by a surface 141 and a surface 145 formed from the blade tip 14b, and the intersection point P is a straight edge 1a. Abut. The surface 145 is formed from the blade tip 14b toward the surface 141.

  The side surface located on the side opposite to the straight edge 1a at the time of cutting is a surface 146 formed from the blade tip 14b, and a surface 147 inclined to the rotation center side of the disk blade 14 with respect to the surface 146 and continuous to the surface 146. And a surface 142. The surface 146 and the surface 147 are continuously formed as descending inclined surfaces having different gradients. The surfaces 141 and 142 are parallel to each other and orthogonal to the rotation center line.

  FIG. 7B shows a state in the middle of cutting the covering sheet 2 protruding from the straight edge 1a. The covering sheet 2 protruding from the straight edge 1a is cut by moving the disk blade 14 along the straight edge 1a (moving in the direction of the arrow) while bringing the intersection P into contact with the straight edge 1a. Is done. By cutting, the covering sheet 2 is divided into a remaining portion 2a remaining on the substrate 1 side and a cut portion 2b. In the case of this example, the cut portion 2b is guided by the surfaces 146 and 147 outward in the radial direction, not on the rotation center side of the disc blade 14.

<Control device>
Next, the control device 50 that controls the cutting device A will be described. FIG. 8 is a block diagram of the control device 50. The control device 50 includes a processing unit 51 such as a CPU, a storage unit 52 such as a RAM, a ROM, and a hard disk, and an interface unit 53 that interfaces an external device with the processing unit 51.

  The processing unit 51 executes the program stored in the storage unit 52 and controls the various actuators 57 based on the detection results of the various sensors 56. The various sensors 56 include a sensor that detects the position of the cutting unit 10, and the various actuators 57 include a motor 132a. The input unit 54 is a keyboard, a mouse, or the like that receives instructions from the operator, and the display unit 55 is an image display device that displays various types of information.

<Operation example>
Next, the trimming operation of the covering sheet 2 by the cutting device A will be described. In the case of the present embodiment, the two cutting units share the linear edge 1 a facing each other of the substrate 1, and trim the covering sheet 2 on the four sides of the substrate 1. In the present embodiment, as described above with reference to FIG. 6, the covering sheet 2 is cut by bringing the intersection point P between the surface 143 and the surface 144 into contact with the straight edge 1 a, and therefore the straight edge 1 a The direction of the disc blade 14 is important. The direction of the disc blade 14 (intersection angle of the disc blade 14 with respect to the vertical plane including the straight edge 1a) is adjusted by the rotation angle (rotation amount) of the cutting unit 10 by the rotation / lifting unit 20; It is preferable to set an optimum value. In this embodiment, the data of the cutting start position corresponding to the rotation angle (rotation amount) of the cutting unit 10 at the time of cutting and the size of the substrate 1 is set and stored in the storage unit 52 in advance by so-called teaching.

  9A and 9B are explanatory diagrams of teaching. As shown in the figure, a reference sample substrate 1 is held by a holding unit 40. Then, as shown in FIG. 9A, the two cutting units 10 are generally positioned at the cutting sites of the first set of linear edges 1a facing each other. Then, the operator manually rotates or moves the cutting unit 10 to place it at the optimum cutting position. Then, the controller 50 performs the sample cutting operation (reference cutting operation) in accordance with the substrate to be cut and the covering sheet with respect to the position (Y and Z directions) and the rotation amount of each cutting unit 10 at this time. A cutting position (reference cutting position) is obtained and stored in the storage unit 52. Subsequently, as shown in FIG. 9B, the same processing is performed on the second pair of linear edges 1a facing each other, and the position (X of each cutting unit 10 at the optimum cutting position (reference cutting position) is determined. , Z direction) and the rotation angle (rotation amount) are detected by the control device 50 by the sensor and stored in the storage unit 52. It is also possible to obtain an optimum cutting position (reference cutting position) by actually performing a cutting operation on the sample substrate serving as a reference for the substrate and the covering sheet. Thus, the setting of the rotation angle (rotation amount) and position of the cutting unit 10 at the time of cutting by teaching processing is completed.

  Next, FIGS. 10 to 13 are explanatory diagrams of actual trimming operations. Here, first, it is assumed that the covering sheet 2 that protrudes from the linear edge 1a facing each other and spaced in the Y direction is trimmed. First, trimming is performed on one set of linear end edges 1a out of two sets of linear end edges 1a facing each other, and then trimming is performed on two sets of linear end edges 1a adjacent to these linear end edges 1a.

  As shown in FIG. 10 (A), each cutting unit 10 is rotated at a rotation angle (rotation amount) set by teaching in FIG. 9 (A) while the two cutting units 10 are separated from the substrate 1. . Subsequently, the rotation of the disc blade 14 is started, the cutting unit 10 is moved in the X, Y, and Z directions and moved to the cutting start position as shown in FIG. 10 (B), and the cutting of the covering sheet 2 is started. To do. The positions in the Y and Z directions at this time are based on the positions set by teaching in FIG. Further, the two cutting units 10 are arranged so as to be separated from each other in the X direction.

  Next, as shown in FIG. 11A, the covering sheet 2 is cut along the substrate edge 1a by the disc blade 14 while the two cutting units 10 are moved in the opposite directions in the X direction. Since the covering sheet 2 can be trimmed simultaneously on the two sides of the substrate 1, the working efficiency is increased.

  As shown in FIG. 11B, when the cutting unit 10 reaches the cutting end position, the process proceeds to trimming of the second set of straight edge 1a. For this reason, each cutting unit 10 is once separated from the substrate 1.

  Subsequently, as shown in FIG. 12 (A), each cutting unit 10 is rotated to the rotation amount set by teaching in FIG. 9 (B), and the cutting unit 10 is moved to the cutting start position to cut the covering sheet. To start. However, when trimming the cover sheet 2 that protrudes from the linear edges 1a facing each other that are separated in the X direction, the steps are sequentially performed one by one to prevent the two drive sliders 32 from interfering with each other.

  FIG. 12B shows the cover sheet 2 that protrudes from the straight edge 1a on the right side in the figure, and trims the cutting sheet 10 by moving one cutting unit 10 in the Y direction. Waiting at the selected position. When trimming of the covering sheet 2 protruding from the right straight edge 1a is completed, as shown in FIG. 13, the other cutting unit 10 is moved in the Y direction so that the covering sheet protrudes from the left straight edge 1a. Trimming 2 is performed. At this time, the one cutting unit 10 that has trimmed the cover sheet 2 that protrudes from the right straight edge 1a is in a state of being separated from the substrate 1 and the two drive sliders 32 do not interfere with each other in the Y direction. Move to.

  When the trimming of the cover sheet 2 protruding from the left straight edge 1a is completed, one unit of trimming work is completed. Thereafter, the same trimming operation is repeated for another substrate 1. Needless to say, the teaching process may be performed once for the substrates 1 of the same size, and need not be performed for each substrate 1. Further, when one cutting unit 10 fails, all four sides may be cut by the other cutting unit 10, and the cutting process can be continued.

<Other operation examples>
In the above operation example, the cutting start position is the end portion of the straight end edge 1a, but it may be the middle portion (for example, the middle) of the straight end edge 1a. 14 to 16 show an example in which the middle part of the straight edge 1a is set as the cutting start position.

  First, as shown in FIG. 14A, each cutting unit 10 is rotated at a rotation angle (rotation amount) set by teaching or the like in a state where the two cutting units 10 are separated from the substrate 1. Subsequently, the rotation of the disc blade 14 is started, and the cutting unit 10 is moved in the X, Y, and Z directions, and as shown in FIG. 14 (B), the middle portion of the straight edge 1a (in the example of FIG. It moves to the cutting start position which is the middle), and the cutting of the covering sheet 2 is started. The two cutting units 10 may be moved in the same direction in the X direction, or may be moved in directions opposite to each other. In this embodiment, it is moved in the reverse direction (the direction in which the cutting unit moves away).

  FIG. 15A shows a state in which the cutting unit 10 is moved from the middle portion of the straight edge 1a to one end portion of the straight edge 1a and the covering sheet 2 is cut (first partial cutting step).

  Thereafter, the cutting unit 10 is moved again to the middle part of the straight edge 1a. FIG. 15B shows a mode in the middle of movement. In the present embodiment, the two cutting units 10 are once moved to a position away from the substrate 1 in the Y direction. Then, each cutting unit 10 is rotated at a rotation angle (rotation amount) set by teaching or the like. Subsequently, the cutting unit 10 is moved to the middle part (cutting start position) of the straight edge 1a, and then, as shown in FIGS. 16A and 16B, the cutting direction in the first partial cutting step is Moves the cutting unit 10 in the opposite direction, that is, to the other end of the linear edge 1a, whereby the remaining covering sheet 2 is cut (second partial cutting step).

  In this way, trimming of the covering sheet 2 with respect to one straight edge 1a can be performed in two stages. In the case of this operation example, the angles of the disk blades 14 are respectively set in the first partial cutting step and the second partial cutting step as described above. Thus, even if it is a case where the covering sheet 2 is cut from the intermediate part, in this embodiment, since the angle of the disk blade 14 can be adjusted and maintained by the rotation / lifting unit 20, a suitable cutting can be performed. Is possible.

  Note that the cutting method in which the cutting start position is in the middle of the straight edge 1a is applied only to the first set of straight edges 1a, and the second set of straight edges 1a is cut from the ends. Alternatively, it may be applied to both the first set and the second set of straight edges 1a.

  In this way, when cutting is started from the middle part of the straight edge 1a, there is an advantage that the positioning accuracy between the disk blade 14 and the cutting start position is lower than when cutting is started from the end part. . When cutting is started from the end of the straight edge 1a, the cutting start position is the corner of the substrate 1, so that the disc blade 14 is placed on the straight edge 1a adjacent to the straight edge 1a to be trimmed. It is necessary to avoid a situation in which the corner portion is lost due to the collision. When cutting is started from the middle of the straight edge 1a, there is no such problem, and therefore positioning accuracy is sufficient.

Claims (12)

A disc blade for trimming a covering sheet covering the substrate along the straight edge of the substrate;
Driving means for supporting and rotating the disk blade perpendicularly to the surface direction of the substrate;
Moving means for moving one of the driving means and the substrate so that the disc blade moves relative to the substrate along the linear edge;
A cutting device comprising:
In order to adjust an angle between a plane perpendicular to the substrate surface including the straight edge and a plane formed by the disc blade, the disc blade is rotated around an axis perpendicular to the substrate surface. Rotation means for maintaining the rotation angle;
Control means for controlling the moving means and the rotating means;
The cutting device further comprising: The disc blade has a first surface formed from a tip of the blade on a side surface of the blade edge portion which is located on the linear edge side at the time of cutting, and the disc blade with respect to the first surface. A second surface that is inclined toward the center of rotation and is continuous with the first surface;
The said control means controls the said rotation means so that the intersection of the said 1st surface of the said disk blade and the said 2nd surface contact | abuts to the said linear edge. Cutting device. A support portion that supports the drive means so as to be movable in the direction of the rotation center line of the disc blade;
Biasing means for biasing the driving means in a direction approaching the substrate;
The cutting device according to claim 1, comprising:   The cutting apparatus according to claim 1, wherein the rotation means is arranged so that a rotation center axis of the rotation means is included in a plane parallel to a plane including the disk blade.   The disk blade has a third surface formed from the blade tip on a side surface of the blade edge portion that is opposite to the linear edge when cutting, and the circle with respect to the third surface. The cutting apparatus according to claim 2, further comprising a fourth surface that is inclined toward the rotation center side of the plate blade and is continuous with the third surface. The drive means
A rotary shaft body having a mounting portion of the disk blade at the tip;
A cylindrical body that is provided so as to surround a peripheral surface of the rotating shaft body and is freely rotatable with respect to the rotating shaft body;
The cutting device according to claim 1, comprising: The substrate is a rectangular substrate;
Having first and second head units comprising the disk blade, the drive means and the rotation means;
The moving means is
A first moving unit that supports the first head unit and moves the first head unit in a direction parallel to a first set of linear edges of the rectangular substrate facing each other;
A second moving unit that supports the second head unit and moves the second head unit in a direction parallel to the first set of linear edges of the rectangular substrate;
A third moving unit that moves the first and second moving units in a direction parallel to a second set of linear edges of the rectangular substrate facing each other;
The control means includes
A first rotation control for rotating the disk blades by controlling the rotation means of the first and second head units;
The cover sheet is moved along the straight edge of the rectangular substrate while controlling the first and second moving units to move the disk blades in directions parallel to the straight edges of the first set. A first cutting control for cutting
The cutting apparatus according to claim 1, wherein: The control means includes
After the first cutting control, a second rotation control for controlling the rotation means of the first and second head units to rotate the disk blades;
After the second rotation control, the covering sheet is moved to the rectangular substrate while controlling the third moving unit to move the disk blades in directions parallel to the straight edges of the second set. A second cutting control for cutting along the straight edge of
The cutting apparatus according to claim 7, wherein: The control means includes
9. The cutting apparatus according to claim 8, wherein the first and second moving units are controlled so that the disk blades move in directions opposite to each other during the first and second cutting control. 10. A disc blade for trimming a covering sheet covering the substrate along the straight edge of the substrate;
Driving means for supporting and rotating the disk blade perpendicularly to the surface direction of the substrate;
Moving means for moving one of the driving means and the substrate so that the disc blade moves relative to the substrate along the linear edge;
In order to adjust an angle between a plane perpendicular to the substrate surface including the straight edge and a plane formed by the disc blade, the disc blade is rotated around an axis perpendicular to the substrate surface. Rotation means for maintaining the rotation angle;
A support portion that supports the drive means so as to be movable in the direction of the rotation center line of the disc blade;
Biasing means for biasing the driving means in a direction approaching the substrate;
A cutting method for a cutting device comprising:
The rotating means adjusts the disk blade to a predetermined angle, and the moving means brings the rotary blade into contact with a predetermined position on the first straight edge of the substrate. And a first cutting step of cutting the covering sheet by moving relative to the substrate along the first straight edge,
After the first cutting step, the rotating blade adjusts the disk blade to a predetermined angle, and the moving means at the second straight edge adjacent to the first straight edge, A second cutting step in which the rotary blade is brought into contact with a predetermined position set in advance and moved relative to the substrate along the second linear edge to cut the covering sheet;
A cutting method characterized by comprising: The first cutting step includes
The rotating means adjusts the disk blade to a predetermined first angle, and the moving means causes the rotary blade to abut on the midway portion of the first linear edge of the substrate, and A first partial cutting step of cutting the covering sheet by moving relative to the substrate in a first direction along a first straight edge;
After the first partial cutting step, the disk blade is adjusted to a predetermined second angle, and the moving means causes the rotary blade to abut on the midway portion and along the first straight edge. A second partial cutting step of cutting the covering sheet by moving relative to the substrate in a second direction opposite to the first direction;
The cutting method according to claim 10, comprising: The second cutting step includes
The rotating means adjusts the disk blade to a predetermined third angle, and the moving means causes the rotary blade to abut on the midway portion of the second straight edge of the substrate, and A third partial cutting step of cutting the covering sheet by moving relative to the substrate in a third direction along a second straight edge;
After the third partial cutting step, the disk blade is adjusted to a predetermined fourth angle, and the moving means causes the rotary blade to abut on the midway portion and along the second straight edge. A fourth partial cutting step of cutting the covering sheet by moving relative to the substrate in a fourth direction opposite to the third direction;
The cutting method according to claim 11, comprising:

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